Support for QNX 7.0 (thanks, Elad!).

Fixes Bugzilla #3686.

configure.in

@@ -2098,6 +2098,30 @@ AC_HELP_STRING([--enable-video-dummy], [use dummy video driver [[default=yes]]])
     fi
 }
 
+dnl Set up the QNX video driver if enabled
+CheckQNXVideo()
+{
+    if test x$enable_video = xyes; then
+        AC_DEFINE(SDL_VIDEO_DRIVER_QNX, 1, [ ])
+        SOURCES="$SOURCES $srcdir/src/video/qnx/*.c"
+        have_video=yes
+        EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lscreen -lEGL -lGLESv2"
+        SUMMARY_video="${SUMMARY_video} qnx"
+    fi
+}
+
+dnl Set up the QNX audio driver if enabled
+CheckQNXAudio()
+{
+    if test x$enable_audio = xyes; then
+        AC_DEFINE(SDL_AUDIO_DRIVER_QSA, 1, [ ])
+        SOURCES="$SOURCES $srcdir/src/audio/qsa/*.c"
+        have_video=yes
+        EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lasound"
+        SUMMARY_audio="${SUMMARY_audio} qsa"
+    fi
+}
+
 dnl Check to see if OpenGL support is desired
 AC_ARG_ENABLE(video-opengl,
 AC_HELP_STRING([--enable-video-opengl], [include OpenGL support [[default=yes]]]),
@@ -2573,6 +2597,10 @@ AC_HELP_STRING([--enable-pthread-sem], [use pthread semaphores [[default=yes]]])
             pthread_cflags="-D_REENTRANT"
             pthread_lib=""
             ;;
+        *-*-nto*)
+            pthread_cflags="-D_REENTRANT"
+            pthread_lib=""
+            ;;
         *)
             pthread_cflags="-D_REENTRANT"
             pthread_lib="-lpthread"
@@ -3017,7 +3045,7 @@ CheckWarnAll
 
 dnl Set up the configuration based on the host platform!
 case "$host" in
-    *-*-linux*|*-*-uclinux*|*-*-gnu*|*-*-k*bsd*-gnu|*-*-bsdi*|*-*-freebsd*|*-*-dragonfly*|*-*-netbsd*|*-*-openbsd*|*-*-sysv5*|*-*-solaris*|*-*-hpux*|*-*-aix*|*-*-minix*)
+    *-*-linux*|*-*-uclinux*|*-*-gnu*|*-*-k*bsd*-gnu|*-*-bsdi*|*-*-freebsd*|*-*-dragonfly*|*-*-netbsd*|*-*-openbsd*|*-*-sysv5*|*-*-solaris*|*-*-hpux*|*-*-aix*|*-*-minix*|*-*-nto*)
         case "$host" in
             *-raspberry-linux*)
                 # Raspberry Pi
@@ -3082,6 +3110,9 @@ case "$host" in
             *-*-hpux*)          ARCH=hpux ;;
             *-*-aix*)           ARCH=aix ;;
             *-*-minix*)         ARCH=minix ;;
+            *-*-nto*)           ARCH=nto
+                CheckQNXVideo
+                ;;
         esac
         CheckVisibilityHidden
         CheckDeclarationAfterStatement
@@ -3123,6 +3154,7 @@ case "$host" in
         CheckLinuxVersion
         CheckRPATH
         CheckVivanteVideo
+
         # Set up files for the audio library
         if test x$enable_audio = xyes; then
           case $ARCH in
@@ -3147,6 +3179,9 @@ case "$host" in
                 SUMMARY_audio="${SUMMARY_audio} android"
                 have_audio=yes
             ;;
+            nto)
+                CheckQNXAudio
+            ;;
           esac
         fi
         # Set up files for the joystick library

include/SDL_config.h.in

@@ -317,6 +317,7 @@
 #undef SDL_VIDEO_DRIVER_NACL
 #undef SDL_VIDEO_DRIVER_VIVANTE
 #undef SDL_VIDEO_DRIVER_VIVANTE_VDK
+#undef SDL_VIDEO_DRIVER_QNX
 
 #undef SDL_VIDEO_RENDER_D3D
 #undef SDL_VIDEO_RENDER_D3D11

src/audio/SDL_sysaudio.h

@@ -205,6 +205,7 @@ extern AudioBootStrap FUSIONSOUND_bootstrap;
 extern AudioBootStrap ANDROIDAUDIO_bootstrap;
 extern AudioBootStrap PSPAUDIO_bootstrap;
 extern AudioBootStrap EMSCRIPTENAUDIO_bootstrap;
+extern AudioBootStrap QNX_bootstrap;
 
 #endif /* SDL_sysaudio_h_ */
 

src/audio/qsa/SDL_qsa_audio.c

@@ -370,13 +370,13 @@ QSA_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
         this->hidden->cardno = device->cardno;
         status = snd_pcm_open(&this->hidden->audio_handle,
                               device->cardno, device->deviceno,
-                              iscapture ? SND_PCM_OPEN_PLAYBACK : SND_PCM_OPEN_CAPTURE);
+                              iscapture ? SND_PCM_OPEN_CAPTURE : SND_PCM_OPEN_PLAYBACK);
     } else {
         /* Open system default audio device */
         status = snd_pcm_open_preferred(&this->hidden->audio_handle,
                                         &this->hidden->cardno,
                                         &this->hidden->deviceno,
-                                        iscapture ? SND_PCM_OPEN_PLAYBACK : SND_PCM_OPEN_CAPTURE);
+                                        iscapture ? SND_PCM_OPEN_CAPTURE : SND_PCM_OPEN_PLAYBACK);
     }
 
     /* Check if requested device is opened */
@@ -385,6 +385,7 @@ QSA_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
         return QSA_SetError("snd_pcm_open", status);
     }
 
+#if 0
     if (!QSA_CheckBuggyCards(this, QSA_MMAP_WORKAROUND)) {
         /* Disable QSA MMAP plugin for buggy audio drivers */
         status =
@@ -394,6 +395,7 @@ QSA_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
             return QSA_SetError("snd_pcm_plugin_set_disable", status);
         }
     }
+#endif
 
     /* Try for a closest match on audio format */
     format = 0;

src/dynapi/SDL_dynapi.c

@@ -216,7 +216,7 @@ static SDL_INLINE void *get_sdlapi_entry(const char *fname, const char *sym)
     return retval;
 }
 
-#elif defined(unix) || defined(__unix__) || defined(__APPLE__) || defined(__HAIKU__)
+#elif defined(unix) || defined(__unix__) || defined(__APPLE__) || defined(__HAIKU__) || defined(__QNX__)
 #include <dlfcn.h>
 static SDL_INLINE void *get_sdlapi_entry(const char *fname, const char *sym)
 {
@@ -302,4 +302,3 @@ SDL_InitDynamicAPI(void)
 #endif  /* SDL_DYNAMIC_API */
 
 /* vi: set ts=4 sw=4 expandtab: */
-

src/video/SDL_sysvideo.h

@@ -390,6 +390,7 @@ extern VideoBootStrap Wayland_bootstrap;
 extern VideoBootStrap NACL_bootstrap;
 extern VideoBootStrap VIVANTE_bootstrap;
 extern VideoBootStrap Emscripten_bootstrap;
+extern VideoBootStrap QNX_bootstrap;
 
 extern SDL_VideoDevice *SDL_GetVideoDevice(void);
 extern int SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode);

src/video/SDL_video.c

@@ -111,6 +111,9 @@ static VideoBootStrap *bootstrap[] = {
 #if SDL_VIDEO_DRIVER_EMSCRIPTEN
     &Emscripten_bootstrap,
 #endif
+#if SDL_VIDEO_DRIVER_QNX
+    &QNX_bootstrap,
+#endif
 #if SDL_VIDEO_DRIVER_DUMMY
     &DUMMY_bootstrap,
 #endif

src/video/qnx/gl.c

@@ -0,0 +1,283 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 2017 BlackBerry Limited
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+#include "sdl_qnx.h"
+
+static EGLDisplay   egl_disp;
+
+/**
+ * Detertmines the pixel format to use based on the current display and EGL
+ * configuration.
+ * @param   egl_conf    EGL configuration to use
+ * @return  A SCREEN_FORMAT* constant for the pixel format to use
+ */
+static int
+chooseFormat(EGLConfig egl_conf)
+{
+    EGLint buffer_bit_depth;
+    EGLint alpha_bit_depth;
+
+    eglGetConfigAttrib(egl_disp, egl_conf, EGL_BUFFER_SIZE, &buffer_bit_depth);
+    eglGetConfigAttrib(egl_disp, egl_conf, EGL_ALPHA_SIZE, &alpha_bit_depth);
+
+    switch (buffer_bit_depth) {
+        case 32:
+            return SCREEN_FORMAT_RGBX8888;
+        case 24:
+            return SCREEN_FORMAT_RGB888;
+        case 16:
+            switch (alpha_bit_depth) {
+                case 4:
+                    return SCREEN_FORMAT_RGBX4444;
+                case 1:
+                    return SCREEN_FORMAT_RGBA5551;
+                default:
+                    return SCREEN_FORMAT_RGB565;
+            }
+        default:
+            return 0;
+    }
+}
+
+/**
+ * Enumerates the supported EGL configurations and chooses a suitable one.
+ * @param[out]  pconf   The chosen configuration
+ * @param[out]  pformat The chosen pixel format
+ * @return 0 if successful, -1 on error
+ */
+int
+glGetConfig(EGLConfig *pconf, int *pformat)
+{
+    EGLConfig egl_conf = (EGLConfig)0;
+    EGLConfig *egl_configs;
+    EGLint egl_num_configs;
+    EGLint val;
+    EGLBoolean rc;
+    EGLint i;
+
+    // Determine the numbfer of configurations.
+    rc = eglGetConfigs(egl_disp, NULL, 0, &egl_num_configs);
+    if (rc != EGL_TRUE) {
+        return -1;
+    }
+
+    if (egl_num_configs == 0) {
+        return -1;
+    }
+
+    // Allocate enough memory for all configurations.
+    egl_configs = malloc(egl_num_configs * sizeof(*egl_configs));
+    if (egl_configs == NULL) {
+        return -1;
+    }
+
+    // Get the list of configurations.
+    rc = eglGetConfigs(egl_disp, egl_configs, egl_num_configs,
+                       &egl_num_configs);
+    if (rc != EGL_TRUE) {
+        free(egl_configs);
+        return -1;
+    }
+
+    // Find a good configuration.
+    for (i = 0; i < egl_num_configs; i++) {
+        eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_SURFACE_TYPE, &val);
+        if (!(val & EGL_WINDOW_BIT)) {
+            continue;
+        }
+
+        eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_RENDERABLE_TYPE, &val);
+        if (!(val & EGL_OPENGL_ES2_BIT)) {
+            continue;
+        }
+
+        eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_DEPTH_SIZE, &val);
+        if (val == 0) {
+            continue;
+        }
+
+        egl_conf = egl_configs[i];
+        break;
+    }
+
+    free(egl_configs);
+    *pconf = egl_conf;
+    *pformat = chooseFormat(egl_conf);
+
+    return 0;
+}
+
+/**
+ * Initializes the EGL library.
+ * @param   _THIS
+ * @param   name    unused
+ * @return  0 if successful, -1 on error
+ */
+int
+glLoadLibrary(_THIS, const char *name)
+{
+    EGLNativeDisplayType    disp_id = EGL_DEFAULT_DISPLAY;
+
+    egl_disp = eglGetDisplay(disp_id);
+    if (egl_disp == EGL_NO_DISPLAY) {
+        return -1;
+    }
+
+    if (eglInitialize(egl_disp, NULL, NULL) == EGL_FALSE) {
+        return -1;
+    }
+
+    return 0;
+}
+
+/**
+ * Finds the address of an EGL extension function.
+ * @param   proc    Function name
+ * @return  Function address
+ */
+void *
+glGetProcAddress(_THIS, const char *proc)
+{
+    return eglGetProcAddress(proc);
+}
+
+/**
+ * Associates the given window with the necessary EGL structures for drawing and
+ * displaying content.
+ * @param   _THIS
+ * @param   window  The SDL window to create the context for
+ * @return  A pointer to the created context, if successful, NULL on error
+ */
+SDL_GLContext
+glCreateContext(_THIS, SDL_Window *window)
+{
+    window_impl_t   *impl = (window_impl_t *)window->driverdata;
+    EGLContext      context;
+    EGLSurface      surface;
+
+    struct {
+        EGLint client_version[2];
+        EGLint none;
+    } egl_ctx_attr = {
+        .client_version = { EGL_CONTEXT_CLIENT_VERSION, 2 },
+        .none = EGL_NONE
+    };
+
+    struct {
+        EGLint render_buffer[2];
+        EGLint none;
+    } egl_surf_attr = {
+        .render_buffer = { EGL_RENDER_BUFFER, EGL_BACK_BUFFER },
+        .none = EGL_NONE
+    };
+
+    context = eglCreateContext(egl_disp, impl->conf, EGL_NO_CONTEXT,
+                               (EGLint *)&egl_ctx_attr);
+    if (context == EGL_NO_CONTEXT) {
+        return NULL;
+    }
+
+    surface = eglCreateWindowSurface(egl_disp, impl->conf, impl->window,
+                                     (EGLint *)&egl_surf_attr);
+    if (surface == EGL_NO_SURFACE) {
+        return NULL;
+    }
+
+    eglMakeCurrent(egl_disp, surface, surface, context);
+
+    impl->surface = surface;
+    return context;
+}
+
+/**
+ * Sets a new value for the number of frames to display before swapping buffers.
+ * @param   _THIS
+ * @param   interval    New interval value
+ * @return  0 if successful, -1 on error
+ */
+int
+glSetSwapInterval(_THIS, int interval)
+{
+    if (eglSwapInterval(egl_disp, interval) != EGL_TRUE) {
+        return -1;
+    }
+
+    return 0;
+}
+
+/**
+ * Swaps the EGL buffers associated with the given window
+ * @param   _THIS
+ * @paran   window  Window to swap buffers for
+ */
+void
+glSwapWindow(_THIS, SDL_Window *window)
+{
+    window_impl_t   *impl = (window_impl_t *)window->driverdata;
+    eglSwapBuffers(egl_disp, impl->surface);
+}
+
+/**
+ * Makes the given context the current one for drawing operations.
+ * @param   _THIS
+ * @param   window  SDL window associated with the context (maybe NULL)
+ * @param   context The context to activate
+ * @return  0 if successful, -1 on error
+ */
+int
+glMakeCurrent(_THIS, SDL_Window *window, SDL_GLContext context)
+{
+    window_impl_t   *impl;
+    EGLSurface      surface = NULL;
+
+    if (window) {
+        impl = (window_impl_t *)window->driverdata;
+        surface = impl->surface;
+    }
+
+    if (eglMakeCurrent(egl_disp, surface, surface, context) != EGL_TRUE) {
+        return -1;
+    }
+
+    return 0;
+}
+
+/**
+ * Destroys a context.
+ * @param   _THIS
+ * @param   context The context to destroy
+ */
+void
+glDeleteContext(_THIS, SDL_GLContext context)
+{
+    eglDestroyContext(egl_disp, context);
+}
+
+/**
+ * Terminates access to the EGL library.
+ * @param   _THIS
+ */
+void
+glUnloadLibrary(_THIS)
+{
+    eglTerminate(egl_disp);
+}

src/video/qnx/keyboard.c

@@ -0,0 +1,133 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 2017 BlackBerry Limited
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+#include "../../events/SDL_keyboard_c.h"
+#include "SDL_scancode.h"
+#include "SDL_events.h"
+#include "sdl_qnx.h"
+#include <sys/keycodes.h>
+
+/**
+ * A map thta translates Screen key names to SDL scan codes.
+ * This map is incomplete, but should include most major keys.
+ */
+static int  key_to_sdl[] = {
+    [KEYCODE_SPACE] = SDL_SCANCODE_SPACE,
+    [KEYCODE_APOSTROPHE] = SDL_SCANCODE_APOSTROPHE,
+    [KEYCODE_COMMA] = SDL_SCANCODE_COMMA,
+    [KEYCODE_MINUS] = SDL_SCANCODE_MINUS,
+    [KEYCODE_PERIOD] = SDL_SCANCODE_PERIOD,
+    [KEYCODE_SLASH] = SDL_SCANCODE_SLASH,
+    [KEYCODE_ZERO] = SDL_SCANCODE_0,
+    [KEYCODE_ONE] = SDL_SCANCODE_1,
+    [KEYCODE_TWO] = SDL_SCANCODE_2,
+    [KEYCODE_THREE] = SDL_SCANCODE_3,
+    [KEYCODE_FOUR] = SDL_SCANCODE_4,
+    [KEYCODE_FIVE] = SDL_SCANCODE_5,
+    [KEYCODE_SIX] = SDL_SCANCODE_6,
+    [KEYCODE_SEVEN] = SDL_SCANCODE_7,
+    [KEYCODE_EIGHT] = SDL_SCANCODE_8,
+    [KEYCODE_NINE] = SDL_SCANCODE_9,
+    [KEYCODE_SEMICOLON] = SDL_SCANCODE_SEMICOLON,
+    [KEYCODE_EQUAL] = SDL_SCANCODE_EQUALS,
+    [KEYCODE_LEFT_BRACKET] = SDL_SCANCODE_LEFTBRACKET,
+    [KEYCODE_BACK_SLASH] = SDL_SCANCODE_BACKSLASH,
+    [KEYCODE_RIGHT_BRACKET] = SDL_SCANCODE_RIGHTBRACKET,
+    [KEYCODE_GRAVE] = SDL_SCANCODE_GRAVE,
+    [KEYCODE_A] = SDL_SCANCODE_A,
+    [KEYCODE_B] = SDL_SCANCODE_B,
+    [KEYCODE_C] = SDL_SCANCODE_C,
+    [KEYCODE_D] = SDL_SCANCODE_D,
+    [KEYCODE_E] = SDL_SCANCODE_E,
+    [KEYCODE_F] = SDL_SCANCODE_F,
+    [KEYCODE_G] = SDL_SCANCODE_G,
+    [KEYCODE_H] = SDL_SCANCODE_H,
+    [KEYCODE_I] = SDL_SCANCODE_I,
+    [KEYCODE_J] = SDL_SCANCODE_J,
+    [KEYCODE_K] = SDL_SCANCODE_K,
+    [KEYCODE_L] = SDL_SCANCODE_L,
+    [KEYCODE_M] = SDL_SCANCODE_M,
+    [KEYCODE_N] = SDL_SCANCODE_N,
+    [KEYCODE_O] = SDL_SCANCODE_O,
+    [KEYCODE_P] = SDL_SCANCODE_P,
+    [KEYCODE_Q] = SDL_SCANCODE_Q,
+    [KEYCODE_R] = SDL_SCANCODE_R,
+    [KEYCODE_S] = SDL_SCANCODE_S,
+    [KEYCODE_T] = SDL_SCANCODE_T,
+    [KEYCODE_U] = SDL_SCANCODE_U,
+    [KEYCODE_V] = SDL_SCANCODE_V,
+    [KEYCODE_W] = SDL_SCANCODE_W,
+    [KEYCODE_X] = SDL_SCANCODE_X,
+    [KEYCODE_Y] = SDL_SCANCODE_Y,
+    [KEYCODE_Z] = SDL_SCANCODE_Z,
+    [KEYCODE_UP] = SDL_SCANCODE_UP,
+    [KEYCODE_DOWN] = SDL_SCANCODE_DOWN,
+    [KEYCODE_LEFT] = SDL_SCANCODE_LEFT,
+    [KEYCODE_PG_UP] = SDL_SCANCODE_PAGEUP,
+    [KEYCODE_PG_DOWN] = SDL_SCANCODE_PAGEDOWN,
+    [KEYCODE_RIGHT] = SDL_SCANCODE_RIGHT,
+    [KEYCODE_RETURN] = SDL_SCANCODE_RETURN,
+    [KEYCODE_TAB] = SDL_SCANCODE_TAB,
+    [KEYCODE_ESCAPE] = SDL_SCANCODE_ESCAPE,
+};
+
+/**
+ * Called from the event dispatcher when a keyboard event is encountered.
+ * Translates the event such that it can be handled by SDL.
+ * @param   event   Screen keyboard event
+ */
+void
+handleKeyboardEvent(screen_event_t event)
+{
+    int             val;
+    SDL_Scancode    scancode;
+
+    // Get the key value.
+    if (screen_get_event_property_iv(event, SCREEN_PROPERTY_SYM, &val) < 0) {
+        return;
+    }
+
+    // Skip unrecognized keys.
+    if ((val < 0) || (val > (sizeof(key_to_sdl) / sizeof(int)))) {
+        return;
+    }
+
+    // Translate to an SDL scan code.
+    scancode = key_to_sdl[val];
+    if (scancode == 0) {
+        return;
+    }
+
+    // Get event flags (key state).
+    if (screen_get_event_property_iv(event, SCREEN_PROPERTY_FLAGS, &val) < 0) {
+        return;
+    }
+
+    // Propagate the event to SDL.
+    // FIXME:
+    // Need to handle more key states (such as key combinations).
+    if (val & KEY_DOWN) {
+        SDL_SendKeyboardKey(SDL_PRESSED, scancode);
+    } else {
+        SDL_SendKeyboardKey(SDL_RELEASED, scancode);
+    }
+}

src/video/qnx/sdl_qnx.h

@@ -0,0 +1,48 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 2017 BlackBerry Limited
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef __SDL_QNX_H__
+#define __SDL_QNX_H__
+
+#include "../SDL_sysvideo.h"
+#include <screen/screen.h>
+#include <EGL/egl.h>
+
+typedef struct
+{
+    screen_window_t window;
+    EGLSurface      surface;
+    EGLConfig       conf;
+} window_impl_t;
+
+extern void handleKeyboardEvent(screen_event_t event);
+
+extern int glGetConfig(EGLConfig *pconf, int *pformat);
+extern int glLoadLibrary(_THIS, const char *name);
+void *glGetProcAddress(_THIS, const char *proc);
+extern SDL_GLContext glCreateContext(_THIS, SDL_Window *window);
+extern int glSetSwapInterval(_THIS, int interval);
+extern void glSwapWindow(_THIS, SDL_Window *window);
+extern int glMakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context);
+extern void glDeleteContext(_THIS, SDL_GLContext context);
+extern void glUnloadLibrary(_THIS);
+
+#endif

src/video/qnx/video.c

@@ -0,0 +1,364 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 2017 BlackBerry Limited
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+#include "../SDL_sysvideo.h"
+#include "sdl_qnx.h"
+
+static screen_context_t context;
+static screen_event_t   event;
+
+/**
+ * Initializes the QNX video plugin.
+ * Creates the Screen context and event handles used for all window operations
+ * by the plugin.
+ * @param   _THIS
+ * @return  0 if successful, -1 on error
+ */
+static int
+videoInit(_THIS)
+{
+    SDL_VideoDisplay display;
+
+    if (screen_create_context(&context, 0) < 0) {
+        return -1;
+    }
+
+    if (screen_create_event(&event) < 0) {
+        return -1;
+    }
+
+    SDL_zero(display);
+
+    if (SDL_AddVideoDisplay(&display) < 0) {
+        return -1;
+    }
+
+    _this->num_displays = 1;
+    return 0;
+}
+
+static void
+videoQuit(_THIS)
+{
+}
+
+/**
+ * Creates a new native Screen window and associates it with the given SDL
+ * window.
+ * @param   _THIS
+ * @param   window  SDL window to initialize
+ * @return  0 if successful, -1 on error
+ */
+static int
+createWindow(_THIS, SDL_Window *window)
+{
+    window_impl_t   *impl;
+    int             size[2];
+    int             numbufs;
+    int             format;
+    int             usage;
+
+    impl = SDL_calloc(1, sizeof(*impl));
+    if (impl == NULL) {
+        return -1;
+    }
+
+    // Create a native window.
+    if (screen_create_window(&impl->window, context) < 0) {
+        goto fail;
+    }
+
+    // Set the native window's size to match the SDL window.
+    size[0] = window->w;
+    size[1] = window->h;
+
+    if (screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_SIZE,
+                                      size) < 0) {
+        goto fail;
+    }
+
+    if (screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_SOURCE_SIZE,
+                                      size) < 0) {
+        goto fail;
+    }
+
+    // Create window buffer(s).
+    if (window->flags & SDL_WINDOW_OPENGL) {
+        if (glGetConfig(&impl->conf, &format) < 0) {
+            goto fail;
+        }
+        numbufs = 2;
+
+        usage = SCREEN_USAGE_OPENGL_ES2;
+        if (screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_USAGE,
+                                          &usage) < 0) {
+            return -1;
+        }
+    } else {
+        format = SCREEN_FORMAT_RGBX8888;
+        numbufs = 1;
+    }
+
+    // Set pixel format.
+    if (screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_FORMAT,
+                                      &format) < 0) {
+        goto fail;
+    }
+
+    // Create buffer(s).
+    if (screen_create_window_buffers(impl->window, numbufs) < 0) {
+        goto fail;
+    }
+
+    window->driverdata = impl;
+    return 0;
+
+fail:
+    if (impl->window) {
+        screen_destroy_window(impl->window);
+    }
+
+    SDL_free(impl);
+    return -1;
+}
+
+/**
+ * Gets a pointer to the Screen buffer associated with the given window. Note
+ * that the buffer is actually created in createWindow().
+ * @param       _THIS
+ * @param       window  SDL window to get the buffer for
+ * @param[out]  pixles  Holds a pointer to the window's buffer
+ * @param[out]  format  Holds the pixel format for the buffer
+ * @param[out]  pitch   Holds the number of bytes per line
+ * @return  0 if successful, -1 on error
+ */
+static int
+createWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format,
+                        void ** pixels, int *pitch)
+{
+    window_impl_t   *impl = (window_impl_t *)window->driverdata;
+    screen_buffer_t buffer;
+
+    // Get a pointer to the buffer's memory.
+    if (screen_get_window_property_pv(impl->window, SCREEN_PROPERTY_BUFFERS,
+                                      (void **)&buffer) < 0) {
+        return -1;
+    }
+
+    if (screen_get_buffer_property_pv(buffer, SCREEN_PROPERTY_POINTER,
+                                      pixels) < 0) {
+        return -1;
+    }
+
+    // Set format and pitch.
+    if (screen_get_buffer_property_iv(buffer, SCREEN_PROPERTY_STRIDE,
+                                      pitch) < 0) {
+        return -1;
+    }
+
+    *format = SDL_PIXELFORMAT_RGB888;
+    return 0;
+}
+
+/**
+ * Informs the window manager that the window needs to be updated.
+ * @param   _THIS
+ * @param   window      The window to update
+ * @param   rects       An array of reectangular areas to update
+ * @param   numrects    Rect array length
+ * @return  0 if successful, -1 on error
+ */
+static int
+updateWindowFramebuffer(_THIS, SDL_Window *window, const SDL_Rect *rects,
+                        int numrects)
+{
+    window_impl_t   *impl = (window_impl_t *)window->driverdata;
+    screen_buffer_t buffer;
+
+    if (screen_get_window_property_pv(impl->window, SCREEN_PROPERTY_BUFFERS,
+                                      (void **)&buffer) < 0) {
+        return -1;
+    }
+
+    screen_post_window(impl->window, buffer, numrects, (int *)rects, 0);
+    screen_flush_context(context, 0);
+    return 0;
+}
+
+/**
+ * Runs the main event loop.
+ * @param   _THIS
+ */
+static void
+pumpEvents(_THIS)
+{
+    int             type;
+
+    for (;;) {
+        if (screen_get_event(context, event, 0) < 0) {
+            break;
+        }
+
+        if (screen_get_event_property_iv(event, SCREEN_PROPERTY_TYPE, &type)
+            < 0) {
+            break;
+        }
+
+        if (type == SCREEN_EVENT_NONE) {
+            break;
+        }
+
+        switch (type) {
+        case SCREEN_EVENT_KEYBOARD:
+            handleKeyboardEvent(event);
+            break;
+
+        default:
+            break;
+        }
+    }
+}
+
+/**
+ * Updates the size of the native window using the geometry of the SDL window.
+ * @param   _THIS
+ * @param   window  SDL window to update
+ */
+static void
+setWindowSize(_THIS, SDL_Window *window)
+{
+    window_impl_t   *impl = (window_impl_t *)window->driverdata;
+    int             size[2];
+
+    size[0] = window->w;
+    size[1] = window->h;
+
+    screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_SIZE, size);
+    screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_SOURCE_SIZE,
+                                  size);
+}
+
+/**
+ * Makes the native window associated with the given SDL window visible.
+ * @param   _THIS
+ * @param   window  SDL window to update
+ */
+static void
+showWindow(_THIS, SDL_Window *window)
+{
+    window_impl_t   *impl = (window_impl_t *)window->driverdata;
+    const int       visible = 1;
+
+    screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_VISIBLE,
+                                  &visible);
+}
+
+/**
+ * Makes the native window associated with the given SDL window invisible.
+ * @param   _THIS
+ * @param   window  SDL window to update
+ */
+static void
+hideWindow(_THIS, SDL_Window *window)
+{
+    window_impl_t   *impl = (window_impl_t *)window->driverdata;
+    const int       visible = 0;
+
+    screen_set_window_property_iv(impl->window, SCREEN_PROPERTY_VISIBLE,
+        &visible);
+}
+
+/**
+ * Destroys the native window associated with the given SDL window.
+ * @param   _THIS
+ * @param   window  SDL window that is being destroyed
+ */
+static void
+destroyWindow(_THIS, SDL_Window *window)
+{
+    window_impl_t   *impl = (window_impl_t *)window->driverdata;
+
+    if (impl) {
+        screen_destroy_window(impl->window);
+        window->driverdata = NULL;
+    }
+}
+
+/**
+ * Frees the plugin object created by createDevice().
+ * @param   device  Plugin object to free
+ */
+static void
+deleteDevice(SDL_VideoDevice *device)
+{
+    SDL_free(device);
+}
+
+/**
+ * Creates the QNX video plugin used by SDL.
+ * @param   devindex    Unused
+ * @return  Initialized device if successful, NULL otherwise
+ */
+static SDL_VideoDevice *
+createDevice(int devindex)
+{
+    SDL_VideoDevice *device;
+
+    device = (SDL_VideoDevice *)SDL_calloc(1, sizeof(SDL_VideoDevice));
+    if (device == NULL) {
+        return NULL;
+    }
+
+    device->driverdata = NULL;
+    device->VideoInit = videoInit;
+    device->VideoQuit = videoQuit;
+    device->CreateWindow = createWindow;
+    device->CreateWindowFramebuffer = createWindowFramebuffer;
+    device->UpdateWindowFramebuffer = updateWindowFramebuffer;
+    device->SetWindowSize = setWindowSize;
+    device->ShowWindow = showWindow;
+    device->HideWindow = hideWindow;
+    device->PumpEvents = pumpEvents;
+    device->DestroyWindow = destroyWindow;
+
+    device->GL_LoadLibrary = glLoadLibrary;
+    device->GL_GetProcAddress = glGetProcAddress;
+    device->GL_CreateContext = glCreateContext;
+    device->GL_SetSwapInterval = glSetSwapInterval;
+    device->GL_SwapWindow = glSwapWindow;
+    device->GL_MakeCurrent = glMakeCurrent;
+    device->GL_DeleteContext = glDeleteContext;
+    device->GL_UnloadLibrary = glUnloadLibrary;
+
+    device->free = deleteDevice;
+    return device;
+}
+
+static int
+available()
+{
+    return 1;
+}
+
+VideoBootStrap QNX_bootstrap = {
+    "qnx", "QNX Screen",
+    available, createDevice
+};